Runbuk, Inc. is a premier event organizer based in Burlingame, California, known for creating unforgettable running experiences at the world’s extremes. Their mission is grounded in the belief that everyone is an athlete, regardless of speed, age, or ability. Runbuk proudly organizes unique events like the North Pole Marathon, famously dubbed the World's Coolest Marathon, and the Antarctic Ice Marathon. They also facilitate the challenging World Marathon Challenge, which spans seven marathons across seven continents in just seven days.

Runbuk leverages a specialized network of polar logistics experts to ensure the safety and enjoyment of participants at each event. With comprehensive support that includes medical personnel, safety measures, and experienced guides, athletes are empowered to push their limits in breathtaking locations. Led by Richard Donovan, an accomplished ultramarathon runner and race director, Runbuk inspires runners to explore and conquer the great outdoors through extraordinary athletic challenges. Join them to ignite your passion for running and discover the world.